Property Due Diligence Checklist NZ

What's inside

What the checklist covers

Most buyers do some due diligence. Few do all of it. This checklist covers every free check you should be running before you submit an offer, from council records to comparable sales to the basics most people miss.

✅ Council records 

✅ Comparable sales analysis

✅ Flood & hazard zone checks

✅ Rental yield validation

✅ Title & covenant checks

✅ Building inspection checklist

✅ Zoning & planning rules

✅ Neighbourhood research

Why it matters

What is property due diligence in New Zealand?

Due diligence is the investigation you do on a property before committing to buy it. In New Zealand, this typically happens during a conditional period after your offer is accepted, but experienced investors start their checks before they even put in an offer.

The goal is to uncover anything that would change your decision to buy, or change the price you're willing to pay. That could be unconsented work, a problematic title, flooding risk, a major repair bill, or simply a price that doesn't stack up against comparable sales.

Skipping due diligence, or rushing it - is one of the most expensive mistakes NZ buyers make. Once you're unconditional, you're committed. The checklist gives you a process to follow every time, so nothing gets missed.

Common mistakes

Due diligence mistakes NZ buyers make

Leaving it too late. The conditional period isn't long, typically 5–15 working days. If you start ordering reports on day one you have time. If you wait until day five, you don't.

Not doing basic DIY Building checks. Before you pay $500+ for a full building report, there are a lot of free checks you can do yourself.

Trusting the agent's comparable sales. Run your own. Agents sometimes cherry-pick the most favourable comparables. Pull the actual recent sales data yourself and make your own assessment.

Not checking the neighbourhood. The property might be fine,  the street might not be. Crime data, flood zone maps, school zones, and planned infrastructure changes are all worth checking and all free.

Frequently asked questions